.add{
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3190e8;
    line-height: 100px;
    position: fixed;
    bottom: 0;
    width: 100%;
    border-top:1px solid #eee;/*no*/
    font-size: 32px;
    i:before{
        font-size: 45px;
    }
}